Liquid crystal display screen capable of preventing touch screen from being hot and tablet computer

Abstract

The utility model discloses a liquid crystal display screen and a tablet personal computer capable of preventing the touch screen from being hot, the liquid crystal display screen capable of preventing the touch screen from being hot comprises a backlight module, a display module, the touch screen and a cover plate, the backlight module comprises a lower iron frame, the lower iron frame extends outwards to form an iron stand ear, a PCB is fixed on the upper surface of the iron stand ear, and the touch screen is fixed on the PCB. At least one heating component is fixed on the PCB; the display module is arranged above the backlight module; the touch screen is arranged above the display module, and a cooling fin is arranged on the lower surface of the touch screen at the PCB; and the cover plate is arranged above the touch screen. Due to the fact that the cooling fins are arranged on the lower surface of the touch screen located on the PCB, heat emitted by the PCB firstly passes through the cooling fins when being transmitted upwards, the cooling fins can enhance the heat transmission efficiency, the rapid heat dissipation effect is achieved, local heating and hot burning of the touch screen and the cover plate are avoided, it is guaranteed that the temperature is normal when a hand touches the cover plate, and the service life of the touch screen is prolonged. And the heat influence of the heating circuit is reduced, so that the phenomenon of local heating and hot is solved.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, and more specifically, to a liquid crystal display screen and tablet computer that avoids overheating of the touch screen. Background Technology

[0002] For large-size LCD displays, to achieve a thinner stacked module, a backlight bracket is typically extended into an "ear" structure, and the PCB board is then fixed to the bracket's "ears." After the display module and touchscreen are attached, the PCB board is very close to the touchscreen, and the PCB board contains many circuits that generate a lot of heat during operation. This heat is conducted to the touchscreen and cover plate, causing localized overheating and affecting the feel of touching the cover plate. Utility Model Content

[0003] The technical problem this invention aims to solve is how to prevent the heat generated by the PCB board from affecting the touch screen.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0005] To solve the above-mentioned technical problems, this utility model provides a liquid crystal display screen that avoids overheating of the touch screen, which includes a backlight module, a display module, a touch screen, and a cover plate. The backlight module includes a lower iron frame, and iron brackets extend outward from the lower iron frame. A PCB board is fixed to the upper surface of the iron brackets, and at least one heat-generating component is fixed to the PCB board. The display module is disposed above the backlight module. The touch screen is disposed above the display module, and a heat sink is disposed on the lower surface of the touch screen located on the PCB board. The cover plate is disposed above the touch screen.

[0006] In a preferred embodiment of the liquid crystal display screen for preventing overheating of the touch screen provided by this utility model, the heat sink is a graphite sheet.

[0007] In a preferred embodiment of the liquid crystal display screen for preventing touchscreen overheating provided by this utility model, the thickness of the graphite sheet is 0.05mm.

[0008] As a preferred embodiment of the liquid crystal display screen for avoiding overheating of the touch screen provided by this utility model, the heat-generating components include a main screen boost IC and a backlight boost IC.

[0009] In a preferred embodiment of the liquid crystal display screen for preventing touch screen overheating provided by this utility model, the PCB board is fixed to the upper surface of the iron frame ears by screws.

[0010] In a preferred embodiment of the liquid crystal display screen for preventing touch screen overheating provided by this utility model, there are two screws, which are respectively disposed at both ends of the PCB board.

[0011] As a preferred embodiment of the liquid crystal display screen for avoiding overheating of the touch screen provided by this utility model, the display module has a display FPC extended outwards, and the touch screen has a touch FPC extended outwards.

[0012] As a preferred embodiment of the liquid crystal display screen for avoiding overheating of the touch screen provided by this utility model, the upper surface of the touch FPC is provided with a component area.

[0013] As a preferred embodiment of the liquid crystal display screen for preventing touch screen overheating provided by this utility model, a reinforcing plate is provided on the lower surface of the touch FPC located in the component area.

[0014] This invention provides a tablet computer that includes a liquid crystal display screen as described in any of the preceding claims to prevent the touchscreen from overheating.

[0015] This utility model has the following beneficial effects:

[0016] Because the touchscreen has a heat sink on its lower surface located on the PCB board, the heat dissipated from the PCB board passes through the heat sink first when it is transferred upwards. The heat sink can enhance the heat transfer efficiency and achieve rapid heat dissipation, thus preventing the touchscreen and cover from getting hot in certain areas. This ensures that the temperature is normal when the cover is touched by hand and reduces the impact of heat from the heating circuit, thereby solving the problem of localized overheating. Attached Figure Description

[0017] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This utility model provides a structural schematic diagram of an LCD display screen that prevents the touchscreen from overheating.

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0021] Explanation of icon numbers:

[0022] 1. Backlight module; 2. Display module; 3. Touch screen; 4. Cover plate; 5. Lower iron frame; 6. Iron frame ears; 7. PCB board; 8. Heat sink;

[0023] Screw 9; Display FPC 10; Touch FPC 11; Component Area 12; Reinforcing Plate 13. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] This utility model provides a liquid crystal display screen to prevent touchscreen overheating, comprising a backlight module, a display module, a touchscreen, and a cover plate. The backlight module includes a lower iron frame with iron brackets extending outward from it. A PCB board is fixed to the upper surface of the iron brackets, and at least one heat-generating component is fixed to the PCB board. The display module is disposed above the backlight module. The touchscreen is disposed above the display module, and a heat sink is disposed on the lower surface of the touchscreen located on the PCB board. The cover plate is disposed above the touchscreen.

[0028] Because the touchscreen has a heat sink on its lower surface located on the PCB board, the heat dissipated from the PCB board passes through the heat sink first when it is transferred upwards. The heat sink can enhance the heat transfer efficiency and achieve rapid heat dissipation, thus preventing the touchscreen and cover from getting hot in certain areas. This ensures that the temperature is normal when the cover is touched by hand and reduces the impact of heat from the heating circuit, thereby solving the problem of localized overheating.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. The present invention will be described in detail below with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] Example 1, please refer to Figures 1 to 3 This invention provides a liquid crystal display screen to prevent touchscreen overheating. It includes a backlight module 1, a display module 2, a touchscreen 3, and a cover plate 4. The backlight module 1 includes a lower iron frame 5, from which iron brackets 6 extend outwards. A PCB board 7 is fixed to the upper surface of the iron brackets 6, and at least one heat-generating component is fixed on the PCB board 7. The display module 2 is positioned above the backlight module 1. The touchscreen 3 is positioned above the display module 2, and a heat sink 8 is provided on the lower surface of the touchscreen 3 located on the PCB board 7. The cover plate 4 is positioned above the touchscreen 3. Because the heat sink 8 is provided on the lower surface of the touchscreen 3 located on the PCB board 7, heat emitted from the PCB board is transferred upwards first through the heat sink 8. The heat sink 8 enhances heat transfer efficiency, achieving rapid heat dissipation and preventing localized overheating of the touchscreen 3 and cover plate 4. This ensures that the cover plate 4 is at a normal temperature when touched, reducing the impact of heat from the heating circuit and thus solving the problem of localized overheating.

[0031] Furthermore, the heat sink 8 is a graphite sheet with a thickness of 0.05mm. The layered structure of the graphite sheet can create a large effective surface area, which helps to distribute heat evenly, thereby enhancing the heat transfer efficiency, quickly dissipating heat dissipation points, reducing the impact of heat from the heating circuit, and thus solving the problem of localized overheating.

[0032] Furthermore, the heat-generating components include the main screen boost IC and the backlight boost IC.

[0033] Example 2, please refer to Figures 1 to 3As a further optimization of Embodiment 1, in this embodiment, the PCB board 7 is fixed to the upper surface of the iron frame ear 6 by screws 9. In this embodiment, there are two screws 9, which are respectively set at both ends of the PCB board 7, so as to fix the PCB board 7 to the iron frame ear 6.

[0034] Furthermore, the display module 2 extends outward with a display FPC 10, which is bonded to the PCB board 7, and the touch screen 3 extends outward with a touch FPC 11.

[0035] Furthermore, a component area 12 is provided on the upper surface of the touch FPC11, and a reinforcing plate 13 is provided on the lower surface of the touch FPC11 located in the component area 12, thereby improving the strength of the touch FPC11 in the component area 12.

[0036] This invention also provides a tablet computer that includes a liquid crystal display screen as described in any of the preceding claims to prevent the touchscreen from overheating.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A liquid crystal display screen for avoiding heating of a touch screen, characterized by, It includes: A backlight module includes a lower iron frame, with iron frame ears extending outward from the lower iron frame, and a PCB board fixed to the upper surface of the iron frame ears, with at least one heat-generating component fixed to the PCB board. The display module is positioned above the backlight module; A touch screen is disposed above the display module, and a heat sink is provided on the lower surface of the touch screen located on the PCB board; A cover plate is positioned above the touchscreen.

2. The liquid crystal display screen for avoiding the touch screen from heating up according to claim 1, wherein, The heat sink is a graphite sheet.

3. The liquid crystal display screen for avoiding the touch screen from heating up according to claim 2, wherein, The thickness of the graphite sheet is 0.05 mm.

4. The liquid crystal display of claim 1, wherein, The heat-generating components include a main screen boost IC and a backlight boost IC.

5. The liquid crystal display of claim 1, wherein, The PCB board is fixed to the upper surface of the iron frame lugs with screws.

6. The liquid crystal display screen for avoiding the touch screen from heating up according to claim 5, wherein, There are two screws, which are respectively located at both ends of the PCB board.

7. The liquid crystal display of claim 1, wherein, The display module extends outwards to a display FPC, and the touch screen extends outwards to a touch FPC.

8. The liquid crystal display of claim 7, wherein, The upper surface of the touch FPC is provided with a component area.

9. The liquid crystal display of claim 8, wherein, A reinforcing plate is provided on the lower surface of the touch FPC located in the component area.

10. A tablet computer, comprising: It includes a liquid crystal display screen that avoids overheating of the touch screen as described in any one of claims 1-9.

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